div.gift-box {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100vw;
  background: rgba(0, 0, 0, .2);
  height: calc(100% - (100vw / 16 * 9) - 45px); //   发送红包
  z-index: 13;
  div.box-bottom {
    position: absolute;
    bottom: 0;
    width: 100vw;
    background-color: #fcfcfc;
    box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.5);
    ul {
      border-bottom: 1px solid #ccc;
      width: 100%;
      display: flex;
      flex-direction: row;
      flex-wrap: wrap;
      li.selected {
        border: 2px solid #ff7725;
        padding: 2px;
      }
      li {
        display: flex;
        flex-direction: column;
        width: 25%;
        padding: 4px;
        border: 1px solid rgba(0,0,0,.1);
        img {
          width: 35px;
          margin: auto;
        }
        span {
          text-align: center;
        }
      }
    }
    .gift-bottom {
      height: 36px;
      display: flex;
      flex-direction: row;
      >div {
        flex: 2;
      }
      div.number {
        span.msg {
          display: inline-block;
          height: 36px;
          line-height: 36px;
          padding-left: 10px;
          vertical-align: top;
        }
        div {
          display: inline-block;
          border: 1px solid #ccc;
          border-radius: 15px;
          width: 100px;
          position: relative;
          height: 24px;
          margin-top: 6px;
          img {
            width: 15px;
            height: 15px;
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
          }
          img.sub_num {
            left: 10px;
            height: 30px;
          }
          img.add_num {
            right: 10px;
            height: 30px;
          }
          input {
            font-size: 16px;
            max-width: 30px;
            height: 22px;
            text-align: center;
            border: none;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translateY(-50%) translateX(-50%);
          }
        }
      }
      div:nth-child(2) {
        flex: 1;
        line-height: 36px;
        font-size: 12px;
        span {
          color: red;
        }
      }
      .gift_send {
        background-color: white;
        float: right;
        width: 20%;
        border: 1px solid #38b9ff;
        height: 30px;
        border-radius: 5px;
        color: #38b9ff;
        font-size: 14px;
        margin: 2px 10px 0 0;
      }
    }
  }
}
